Em Tue, Apr 06, 2021 at 02:34:01PM -0300, Arnaldo Carvalho de Melo escreveu: > Em Tue, Apr 06, 2021 at 10:23:37AM -0700, Yonghong Song escreveu: > > On 4/6/21 10:03 AM, Arnaldo Carvalho de Melo wrote: > > > Em Tue, Apr 06, 2021 at 01:59:30PM -0300, Arnaldo Carvalho de Melo escreveu: > > > > Em Tue, Apr 06, 2021 at 01:55:54PM -0300, Arnaldo Carvalho de Melo escreveu: > > > > > Em Tue, Apr 06, 2021 at 01:40:20PM -0300, Arnaldo Carvalho de Melo escreveu: > > > > > > Em Tue, Apr 06, 2021 at 10:22:37AM -0300, Arnaldo Carvalho de Melo escreveu: > > > > > > > I'm seeing these here: > > > > > > > > > > > > [acme@five bpf]$ rm -f ../build/bpf_clang_thin_lto/*vmlinu* > > > > > > > [acme@five bpf]$ time make -j28 LLVM=1 LLVM_IAS=1 O=../build/bpf_clang_thin_lto/ vmlinux > > > > > > > make[1]: Entering directory '/home/acme/git/build/bpf_clang_thin_lto' > > > > > > > GEN Makefile > > > > > > > DESCEND objtool > > > > > > > DESCEND bpf/resolve_btfids > > > > > > > CALL /home/acme/git/bpf/scripts/atomic/check-atomics.sh > > > > > > > CALL /home/acme/git/bpf/scripts/checksyscalls.sh > > > > > > > CHK include/generated/compile.h > > > > > > > GEN .version > > > > > > > CHK include/generated/compile.h > > > > > > > UPD include/generated/compile.h > > > > > > > CC init/version.o > > > > > > > AR init/built-in.a > > > > > > > GEN .tmp_initcalls.lds > > > > > > > LTO vmlinux.o > > > > > > > OBJTOOL vmlinux.o > > > > > > > vmlinux.o: warning: objtool: aesni_gcm_init_avx_gen2()+0x12: unsupported stack pointer realignment > > > > > > > vmlinux.o: warning: objtool: aesni_gcm_enc_update_avx_gen2()+0x12: unsupported stack pointer realignment > > > > > > > vmlinux.o: warning: objtool: aesni_gcm_dec_update_avx_gen2()+0x12: unsupported stack pointer realignment > > > > > > > vmlinux.o: warning: objtool: aesni_gcm_finalize_avx_gen2()+0x12: unsupported stack pointer realignment > > > > > > > vmlinux.o: warning: objtool: aesni_gcm_init_avx_gen4()+0x12: unsupported stack pointer realignment > > > > > > > vmlinux.o: warning: objtool: aesni_gcm_enc_update_avx_gen4()+0x12: unsupported stack pointer realignment > > > > > > > vmlinux.o: warning: objtool: aesni_gcm_dec_update_avx_gen4()+0x12: unsupported stack pointer realignment > > > > > > > vmlinux.o: warning: objtool: aesni_gcm_finalize_avx_gen4()+0x12: unsupported stack pointer realignment > > > > > > > MODPOST vmlinux.symvers > > > > > > > MODINFO modules.builtin.modinfo > > > > > > > GEN modules.builtin > > > > > > > LD .tmp_vmlinux.btf > > > > > > > BTF .btf.vmlinux.bin.o > > > > > > > LD .tmp_vmlinux.kallsyms1 > > > > > > > KSYMS .tmp_vmlinux.kallsyms1.S > > > > > > > AS .tmp_vmlinux.kallsyms1.S > > > > > > > LD .tmp_vmlinux.kallsyms2 > > > > > > > KSYMS .tmp_vmlinux.kallsyms2.S > > > > > > > AS .tmp_vmlinux.kallsyms2.S > > > > > > > LD vmlinux > > > > > > > BTFIDS vmlinux > > > > > > > WARN: multiple IDs found for 'inode': 232, 28822 - using 232 > > > > > > > WARN: multiple IDs found for 'file': 374, 28855 - using 374 > > > > > > > WARN: multiple IDs found for 'path': 379, 28856 - using 379 > > > > > > > WARN: multiple IDs found for 'vm_area_struct': 177, 28929 - using 177 > > > > > > > WARN: multiple IDs found for 'task_struct': 97, 28966 - using 97 > > > > > > > WARN: multiple IDs found for 'seq_file': 510, 29059 - using 510 > > > > > > > WARN: multiple IDs found for 'inode': 232, 29345 - using 232 > > > > > > > WARN: multiple IDs found for 'file': 374, 29429 - using 374 > > > > > > > WARN: multiple IDs found for 'path': 379, 29430 - using 379 > > > > > > > WARN: multiple IDs found for 'vm_area_struct': 177, 29471 - using 177 > > > > > > > WARN: multiple IDs found for 'task_struct': 97, 29481 - using 97 > > > > > > > WARN: multiple IDs found for 'seq_file': 510, 29512 - using 510 > > > > > > > SORTTAB vmlinux > > > > > > > SYSMAP System.map > > > > > > > make[1]: Leaving directory '/home/acme/git/build/bpf_clang_thin_lto' > > > > > > > > > > > > > > [acme@five pahole]$ clang -v > > > > > > > clang version 11.0.0 (Fedora 11.0.0-2.fc33) > > > > This could be due to the compiler. The clang 11 is used here. Sedat is > > using clang 12 and didn't see warnings and I am using clang dev branch Cool, clang 12 is the one in Fedora 34 beta. - Arnaldo > > (clang 13) and didn't see warnings either. clang 11 could generate > > some debuginfo where pahole didn't handle it properly. > > > > I tried to build locally with clang 11 but it crashed as I enabled > > assert during compiler build. Will try a little bit more. > > Right, I'm now at: > > $ git clone https://github.com/llvm/llvm-project.git > $ cmake -DLLVM_ENABLE_PROJECTS=clang -G "Unix Makefiles" ../llvm
